“primary standards of national defense”的概念、定义、翻译、参考文献-科学参考

单词	primary standards of national defense
释义	primary standards of national defense Encyclopedia 工学（计量）释 primary standards of national defense国防最高计量标准在国防军工系统中具有最高计量特性，由国家国防科技工业计量主管部门考核合格并授权在国防军工系统中进行量值传递的测量标准。
随便看	centers of crop diversity centers of origin of crops Center Stage center surface center symmetrical figure center-to-center distance center valued trace center-valued trace [center-valued] trace [of a von Neumann algebra] center-valued trace of a von Neumann algebra centesimal centesimal fraction centesimal minute of angle centesimal second of angle centesimal system centi- Centianhe Reservoir centi-bar centigrade centigrade scale centigrade system centile centillion centimeter-excess object centimeter height finder

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。